Stephen Colbert

Stephen Colbert will debut as host of “The Late Show” on Tuesday, September 8, 2015. The announcement was made by CBS on Monday. As previously announced, David Letterman, who has hosted the show since 1993, will have his final broadcast on May 20.

Stephen Colbert‘s final episode of “The Colbert Report” aired on Thursday. It concludes 10 seasons and more than 1,000 episodes featuring the star as his Conservative alter-ego. Tributes from Hollywood stars have been pouring in all day. See celebrity Twitter reaction here!

President Obama took over for part of Monday’s “The Colbert Report,” kicking Stephen Colbert out of his seat and doing his version of the recurring Colbert bit “The Word,” only he changed it to “The Decree.”

Jennifer Lawrence appeared on Thursday’s “Colbert Report,” where she and Stephen Colbert planned her “downward spiral.” Aftershe joked that she was “going postal,” Colbert graciously offered to help the star plot her downfall.